Determination of Cl, NH4-N and metals in the surface water of the Isumi river, Japan-environmental effects caused by iodine factories
Titel:
Determination of Cl, NH4-N and metals in the surface water of the Isumi river, Japan-environmental effects caused by iodine factories
Auteur:
Mori, S. Uchino, H. Dokiya, Y. Yoshimura, E. Toda, S. Naruse, Y.
Verschenen in:
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering
Paginering:
Jaargang 14 (1979) nr. 6 pagina's 487-500
Jaar:
1979
Inhoud:
A repeated inspection survey was performed of the concentrations of Cl, NH4-N, Na, K, Mg, Ca, Fe, Cu and Mn in the surface water of the Isumi river, the longest river in Chiba prefecture, Japan. The sampling points were the places where the river water is introduced into the ricefields. The survey was continued from June, 1973 to Dec. 1977. It was found that the concentrations of Cl, NH4-N, Na, K, Mg and Ca were unusually high through the year but particularly in winter mainly owing to the waste water of two Iodine Factories situated up river.